Process for the manufacture of lacquers and varnishes.



ARTHUR COHN, OENEUKfiLLN, NEAR BERLIN, GERMANY.

PROCESS FOR THE MANUFACTURE OF LACQUERS AND VARNISHES.

No Drawing.

Specification of Letters Patent.

Patented Dec. 2, 1913.

Application filed April 17, 1912; Serial No. 691,512.

To all whom it may concern:

Be it known that I, ARTHUR CoHN, a subject of the King of Prussia, residing at Neukiilln, near Berlin, in the Kingdom of Prussia, Germany, have invented a new and useful Improved Process for the Manufacture of Lacquers and varnishes, ofwhich the following is a specification.

Chinese wood oil dries more quickly and produces a harder surface than other drying oils, but it has not been possible hitherto to utilize it as a satisfactory varnish orlacquer, whether thickened or not and whether combined with driers or not, because it is very liable to dry with a dead or reticulated surface, particularly noticeable, for instance, under gas light. A mixture of wood oil with ethereal oils such as rectified turpentine oil,'piheoil, etc., or with volatile substances of inorganic nature such as benzol,

The present invention is an improved process whereby Wood oil can be made into lacquers or varnishes which dry quickly with a lustrous surface and hard elastic texture, irrespective of the climate, light or temperature,-.with theuse of only a small percentage of a suitable drier and without the necessity of any addition to the wood oil of other fatty oils, resins and the like, such as have heretofore been used. This object is 'eflecte'd by addin to the wood oil, in addition to any desire driers terpenes and terpene turpentine oil, pine 011 and the like, which are ordinarily used in the manufacture of lacquer and which have an average boiling point of from 153 to 162 C. give little or no help in remedying satisfactorily the above stated drawback; An entirely difi'erent product and an improved effect are obtained by adding to the wood oil, instead of the oils ordinarily used, terpenes, such as vterpene oil, terpineol, and the like, preferably having a minimum boiling point of about 170 C.

I claim;

1. The herein described process of manu-' facturing lacquers and varnishes from wood oil, which consists in mixing the wood oil with a terpenylic substance having aminimum boiling-point of about 170 C.

2. The herein described process of manufacturing lacquers and varnishes from wood oil, which consists in mixing the wood oil with a terpenylic substance.

ARTHUR COHN.

Witnesses HENRY HAsPER, WOLDEMAR HAUPT. 

